172,624,290 Videos Watched

Age Filter: Click to Set

Embed Video
Embed Video:
URL of source video:
Simply give the URL and we will get the embed code automatically, if we support embedding from the site.


Category Videos
Not Right For WatchKnowLearn
Ages: 8 - 12
Addition Properties- Commutative, Zero and Associative Properties
From eduplace.com, produced by Houghton Mifflin
Students will learn to use the properties of addition to make addition easier.  The associative property says that addends can be grouped in any order.  Changing the order that numbers are added does not change the sum.  The sum of zero plus a number... [more]
Found by tinag1974 in Addition
May 20, 2010 at 03:58 PM
  • Favorites

Not Right For WatchKnowLearn
Ages: 7 - 13
Relating Subtraction and Addition Fact Families to Find Missing Numbers
From eduplace.com, produced by Houghton Mifflin
In this video slideshow, students will learn how to use related facts or fact families, to help find missing numbers.  User clicks through the slides.
Found by tinag1974 in Addition
May 20, 2010 at 04:03 PM
Comments: 1
  • Favorites

Not Right For WatchKnowLearn
Ages: 3 - 7
LL Cool J Goes on an Addition Expedition With Elmo
From YouTube, produced by sesame Street.org
In this Sesame Street clip, LL Cool J and Elmo sing the Addition Expedition song. Elmo learns how to "add 'em up."(2:09)
Found by ZG in Addition
July 13, 2009 at 01:35 PM
  • Favorites

Not Right For WatchKnowLearn
Ages: 6 - 12
Make 10 Strategy for Addition--Common Core
From YouTube, produced by youtube
The Common Core State Standards for Mathematics include using general strategies that can be used to help students gain fluency when adding and subtracting within 20. The "make ten" strategy for addition is helpful. Once students master this skill, i... [more]
Found by porter1526 in Addition
April 21, 2012 at 10:01 PM
  • Favorites

Not Right For WatchKnowLearn
Ages: 7 - 10
Apollo 13--Addition Word Problem
From YouTube, produced by braintofu
This animated video breaks down an addition word problem using how far Apollo 13 traveled in its 3 day mission. This is a great resource to help teach mastery of this important skill. (2:17)
Found by porter1526 in Addition
June 23, 2012 at 08:50 PM
  • Favorites

Not Right For WatchKnowLearn
Ages: 4 - 8
Addition Flashcards for Kindergarten, First, and Second Grades
From YouTube, produced by Hana Chramostova
Math flashcards in addition for Kindergarten, first, and second grades. This is a child-narrated video with background music. (07:12)
Found by luckyturist in Addition
May 2, 2014 at 01:50 PM
  • Favorites

Loading featured videos...

History [show]

Loading history...

Please make your comments on categories positive, and not just negative.

People work hard on educational categories, and we want to encourage them to make more!

  • Profanity (curse words), sexually suggestive remarks, and other such obviously inappropriate comments will be deleted immediately, and are grounds for immediate expulsion. Remember, children use this website.
  • Personal criticism on project forums and in video content is not allowed and will be deleted immediately. Any violations of this rule could result in expulsion from the project so please, no insults or other negative personal remarks.
  • Very harshly-worded criticism of content will also be deleted promptly. Please use your vote to express your harshest feelings. Repeated violations of this rule can result in expulsion. If you must criticize another person's hard work, then be nice about it.
If you want to comment, please sign in